The highest day temperature in July 2026 was 86°F. The lowest night temperature was 60°F. The average values for day and night temperatures during July were 79.8°F и 65.7°F respectivly.

The average sea surface temperature in July 2026 for Rio das Ostras was 75.0°F. The maximum and minimum values were 73.8°F and 76.8°F respectively.

Most of the days in July are sunny but you can also expect cloudy and gloomy days.

Precipitation total in July for Rio das Ostras is 0.2 in. It makes july the least rainy month of the year.

The average wind speed in July is 8.4 mph. It makes July one of the most windy months of the year for Rio das Ostras.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Rio das Ostras in July is 7.9 hours.